Relay

Abstract

A relay includes a first contact portion, a second contact portion, and a driving portion. The first contact part comprises a first movable contact spring, and a first movable contact, a first stress piece and a second stress piece which are arranged on the first movable contact spring. The second contact portion includes a first stationary contact. The driving part is provided with a first driving piece, and the first driving piece is located on the side, opposite to the first static contact, of the first movable contact spring and is configured to push the first stress piece to move so that the first movable contact can make contact with the first static contact and pull the second stress piece to move so that the first movable contact can be separated from the first static contact. The rigidity of the first stress piece is smaller than that of the second stress piece, and in the process that the first driving piece pushes the first stress piece, the first stress piece can deform to provide contact pressure for the first movable contact and the first static contact.

Description

Technical Field

[0001] The present application relates to the technical field of electric control devices, and in particular to a relay. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] As one type of relay, a magnetic latching relay includes two contact parts and a driving part. One of the contact parts has a moving contact, and the other contact part has a stationary contact. The driving part has a push rod, and the driving part can drive one of the contact parts to reciprocate through the push rod to make the moving contact contact or separation with the stationary contact.

[0004] When the moving contact and the static contact are disconnected, an arc is easily generated between the two. After the arc is elongated, it is easy to burn the push rod, causing the end of the push rod to deform or be damaged, affecting the accuracy of the push rod's movement, and even causing the relay to be unable to switch between the closed state and the open state, seriously shortening the service life of the relay. Summary of the invention

[0005] The embodiment of the present application provides a relay to solve the problem of arc erosion of a push rod existing in the related art.

[0006] The relay of the embodiment of the present application includes:

[0007] The first contact portion includes a first movable spring piece and a first movable contact point, a first force-bearing member and a second force-bearing member arranged on the first movable spring piece;

[0008] a second contact portion including a first stationary contact; and

[0009] a driving part, comprising a first driving member, the first driving member being located on a side of the first moving spring sheet facing away from the first static contact, and being configured to push the first force-bearing member to move so that the first moving contact contacts the first static contact, and to pull the second force-bearing member to move so that the first moving contact separates from the first static contact;

[0010] The stiffness of the first force-bearing member is smaller than that of the second force-bearing member, and in the process that the first driving member pushes the first force-bearing member, the first force-bearing member can be deformed to provide contact pressure to the first moving contact and the first static contact.

[0011] According to some embodiments of the present application, during the process in which the first driving member pulls the second force-bearing member, the second force-bearing member does not deform.

[0012] According to some embodiments of the present application, the second force-bearing member and the first movable spring are separate structures.

[0013] According to some embodiments of the present application, the stiffness of the second force-bearing member is greater than the stiffness of the first movable reed.

[0014] According to some embodiments of the present application, the second force-bearing member is riveted to the first moving spring.

[0015] According to some embodiments of the present application, the first moving contact is riveted to the first moving spring piece and the second force-bearing member at the same time.

[0016] According to some embodiments of the present application, the second force-bearing member includes a connecting portion and a force-bearing portion, the connecting portion is arranged on the side of the first movable spring piece facing away from the first static contact and is riveted to the first movable spring piece, the force-bearing portion is connected to the connecting portion and protrudes from a surface of the connecting portion on a side facing away from the first static contact, and the first driving member is used to pull the force-bearing portion to separate the first movable contact from the first static contact.

[0017] According to some embodiments of the present application, the force-bearing portion has a first section and two second sections, the two second sections are arranged at intervals, and one end of the two second sections is connected to the connecting portion, and the other end is respectively connected to the two ends of the first section;

[0018] The first driving member has a first pulling portion, which is located in a frame structure surrounded by the first section and two of the second sections and is used for pulling the first section.

[0019] According to some embodiments of the present application, the first section has a first convex arc surface on one side facing the first pulling portion, and the first convex arc surface is used to contact the first pulling portion and form a line contact.

[0020] According to some embodiments of the present application, the force-bearing portion includes two tension-bearing portions disposed at intervals, and the tension-bearing portions are connected to the connecting portion;

[0021] The first driving member has two second pulling parts, and the two second pulling parts are respectively located on one side of the two tensioned parts facing the first movable spring sheet, and are used to pull the two tensioned parts respectively.

[0022] According to some embodiments of the present application, the tension portion has a third section and a fourth section, one end of the third section is connected to the connecting portion, one end of the fourth section is connected to the other end of the third section, and the third section is perpendicular to the fourth section;

[0023] The second pulling portion is located in the area surrounded by the third section and the fourth section. The second pulling portion is used to pull the fourth section. A protrusion is provided on a surface of the second pulling portion facing the third section.

[0024] According to some embodiments of the present application, the second pulling portion has a second convex arc surface on a side facing the fourth segment, and the second convex arc surface is used to contact the fourth segment and form a line contact.

[0025] According to some embodiments of the present application, the first force-bearing member is connected to the connecting portion or the first movable spring, and has a pushing portion located between the two tension portions;

[0026] The first driving member further has a first pushing portion located between the two second pulling portions and used for pushing the pushed portion.

[0027] According to some embodiments of the present application, the first pushing portion has a third outwardly convex arc surface on a side facing the pushed portion, and the third outwardly convex arc surface is used to contact the pushed portion and form a line contact.

[0028] According to some embodiments of the present application, the first movable spring includes a plurality of stacked leaf springs, and the leaf spring farthest from the first static contact point among the plurality of leaf springs is defined as the first leaf spring;

[0029] The first leaf spring has a central portion and an annular segment at a position corresponding to the first static contact, the annular segment surrounds a portion of the outer circumference of the central portion, and a gap is formed between the annular segment and the central portion;

[0030] Along the extending direction of the slit, the annular segment is bent in a direction away from the first static contact to form the first force-bearing member, and the first force-bearing member surrounds a portion of the outer circumference of the second force-bearing member;

[0031] The first moving contact is simultaneously riveted to the remaining leaf springs, the central portion of the first leaf spring, and the second force-bearing member.

[0032] According to some embodiments of the present application, along the length direction of the first movable spring piece, the position of the annular segment corresponding to the second force-bearing member has a compression area, and the first driving member is used to push the compression area.

[0033] According to some embodiments of the present application, the second force-bearing member and the first movable spring are an integral structure.

[0034] According to some embodiments of the present application, the second force-bearing member is formed by bending the end of the first movable spring piece in a direction away from the first static contact.

[0035] According to some embodiments of the present application, the first movable spring sheet includes a plurality of stacked leaf springs, wherein one end of one of the leaf springs in the length direction is bent in a direction away from the first static contact to form the second force-bearing member.

[0036] According to some embodiments of the present application, the first force-bearing member is connected to the first movable spring piece, and is a separate structure from the first movable spring piece.

[0037] According to some embodiments of the present application, the leaf spring farthest from the first static contact point among the plurality of leaf springs is defined as a first leaf spring, and the leaf spring adjacent to the first leaf spring is defined as a second leaf spring;

[0038] One end of the first leaf spring in the length direction is bent in a direction away from the first static contact to form the first force-bearing member, and one end of the second leaf spring in the length direction is bent in a direction away from the first static contact to form the second force-bearing member.

[0039] According to some embodiments of the present application, the stiffness of the second leaf spring is greater than the stiffness of the first leaf spring.

[0040] According to some embodiments of the present application, the thickness of the second leaf spring is greater than the thickness of the first leaf spring.

[0041] According to some embodiments of the present application, the driving part further includes an armature assembly, and the armature assembly and the first driving member are an integral structure.

[0042] According to some embodiments of the present application, the relay also includes a housing, the armature assembly includes a swinging part and an armature body, the swinging part is swingable relative to the housing and is connected to the armature body by integral injection molding, and the first driving member is integrally connected to the swinging part for pushing the first force-bearing member or pulling the second force-bearing member.

[0043] According to some embodiments of the present application, the first contact portion further includes a second static contact, and the first moving contact and the second static contact are respectively arranged at two ends of the length direction of the first moving reed;

[0044] The second contact portion further comprises a second movable spring piece and a second movable contact point, and the first static contact point and the second movable contact point are respectively arranged at two ends of the length direction of the second movable spring piece;

[0045] The first moving reed and the second moving reed are arranged side by side, and the first moving contact corresponds to the first static contact, and the second moving contact corresponds to the second static contact;

[0046] The driving part further comprises a pushing rod and a second driving member, wherein the second driving member drives the second movable reed to move through the pushing rod, so that the second movable contact is in contact with or separated from the second stationary contact.

[0047] According to some embodiments of the present application, the relay further includes a permanent magnet disposed around the first moving contact and the first static contact, and configured to extinguish an arc generated between the first moving contact and the first static contact.

[0048] According to some embodiments of the present application, the first driving member has a pushing portion for pushing the first force-bearing member, and the orthographic projections of the pushing portion and the first movable reed on a target plane do not have overlapping parts;

[0049] Wherein, the target plane is perpendicular to the thickness direction of the first movable spring piece.

[0050] One embodiment of the above application has at least the following advantages or beneficial effects:

[0051] In the relay of the embodiment of the present application, the first driving member is configured to drive the first movable reed to move so that the first movable contact contacts or separates from the first static contact. Since the first driving member is located on the side of the first movable reed facing away from the first static contact and does not extend beyond the first movable reed to the periphery of the first movable contact and the first static contact, the arc generated between the first movable contact and the first static contact does not burn the first driving member, which not only ensures the accuracy of the movement of the first driving member, but also extends the service life of the relay.

[0052] In addition, the first driving member pushes the first force-bearing member to move so that the first moving contact contacts the first static contact, and the first driving member pulls the second force-bearing member to move so that the first moving contact separates from the first static contact. That is to say, in the two processes of closing and opening the contacts, the first driving member acts on two different components respectively. Since the stiffness of the first force-bearing member is less than that of the second force-bearing member, and the first force-bearing member can be deformed to provide contact pressure to the first moving contact and the first static contact, the effect of "flexible closing" is achieved when the contacts are closed, and the effect of "rigid disconnection" is achieved when the contacts are disconnected.

[0053] Furthermore, since the second force-bearing member and the first movable spring piece are separate structures, and the rigidity of the second force-bearing member is greater than that of the first movable spring piece, the second force-bearing member can be made of a harder material, and the first movable spring piece can be made of a more flexible material. In this way, when the contact is disconnected, the first movable spring piece can maintain flexibility and the second force-bearing member can maintain rigidity.

[0054] Furthermore, the first section has a first convex arc surface. When the first pulling part pulls the first section, the first pulling part contacts the first convex arc surface to form a line contact, thereby reducing the contact area between the first section and the first pulling part, and avoiding wear and scraping caused by multiple contacts and frictions between the first section and the first pulling part.

[0055] Furthermore, since the first driving member is located on the side of the first moving spring sheet facing away from the first static contact, and is not around the first moving contact and the first static contact, the position of the permanent magnet can be closer to the first moving contact and the first static contact, thereby increasing the magnetic field strength at the center of the contact and improving the arc extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0057] Figure 1 Shown is a three-dimensional schematic diagram of a relay according to the first embodiment of the present application.

[0058] Figure 2 It shows Figure 1 Schematic diagram of the decomposition.

[0059] Figure 3 The shown is omitted Figure 1 A schematic top view of the first shell and the fixing member in FIG.

[0060] Figure 4 Shown is a three-dimensional schematic diagram of the first contact portion of the relay and the first driving member after being assembled in the first embodiment of the present application.

[0061] Figure 5 It shows Figure 4 A three-dimensional schematic diagram of the first contact part in FIG.

[0062] Figure 6 It shows Figure 4 A three-dimensional schematic diagram of the first driving member, the second driving member and the armature assembly.

[0063] Figure 7 It shows Figure 5 A three-dimensional schematic diagram of the second force-bearing member in FIG.

[0064] Figure 8 Shown is a schematic top view of a relay according to a second embodiment of the present application.

[0065] Fig. 9 Shown is a three-dimensional schematic diagram of the first contact portion of the relay and the first driving member after being assembled according to the second embodiment of the present application.

[0066] Fig.10 It shows Fig. 9 A three-dimensional schematic diagram of the first driving member, the second driving member and the armature assembly at one viewing angle.

[0067] Fig.11 It shows Fig. 9 A three-dimensional schematic diagram of the first contact part in FIG.

[0068] Fig.12 It shows Fig. 9 A three-dimensional schematic diagram of the first driving member, the second driving member and the armature assembly in another viewing angle.

[0069] Fig.13 Shown is a schematic top view of a relay according to a third embodiment of the present application, wherein the contacts are in a closed state.

[0070] Fig.14 Shown is a schematic top view of a relay according to a third embodiment of the present application, wherein the contacts are in an open state.

[0071] Fig.15 Shown is a three-dimensional schematic diagram of the assembly of the first contact portion and the first driving member of the relay of the third embodiment of the present application.

[0072] Fig.16 It shows Fig.15 A three-dimensional schematic diagram of the first contact part in FIG.

[0073] Fig.17 Shown is a schematic top view of a relay according to a fourth embodiment of the present application.

[0074] Fig.18 Shown is a three-dimensional schematic diagram of the first contact portion of the relay and the first driving member after being assembled according to the fourth embodiment of the present application.

[0075] Fig.19 It shows Fig.18 A three-dimensional schematic diagram of the first contact part in FIG.

[0076] The reference numerals are described as follows:

[0077] 100, housing; 110, first housing; 120, second housing; 130, fixing member;

[0078] 200, first contact portion; 210, first moving spring leaf; 211, leaf spring; 211a, first leaf spring; 211b, second leaf spring; 2111, central portion; 2112, annular segment; 2112a, pressure zone; 2113, gap; 220, first moving contact point; 230, first force-bearing member; 231, push portion; 240, second force-bearing member; 241, connecting portion; 242, force-bearing portion; 2421, first segment; 2421a, first convex arc surface; 2422, second segment; 2423, tension portion; 2423a, third segment; 2423b, fourth segment; 250, second static contact point; 260, first lead-out piece;

[0079] 300, second contact portion; 310, second movable spring piece; 320, first static contact point; 330, second movable contact point; 360, second lead-out piece;

[0080] 400, driving part; 410, first driving member; 411, first pulling part; 412, second pulling part; 4121, protruding part; 4122, second convex arc surface; 413, first pushing part; 4131, third convex arc surface; 414, second pushing part; 420, armature assembly; 420a, swinging part; 420b, armature body; 430, pushing rod; 440, coil assembly; 450, second driving member;

[0081] 500. Permanent magnet. DETAILED DESCRIPTION

[0082] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0083] It is understood that the terms "including" and "having" and any variations thereof in the embodiments of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or components that are inherent to these processes, methods, products, or devices.

[0084] An embodiment of the present application provides a relay, which may be a magnetic latching relay, but is not limited thereto.

[0085] like Figure 1 and Figure 2 As shown, the relay of the embodiment of the present application includes a housing 100, a first contact portion 200, a second contact portion 300 and a driving portion 400. The first contact portion 200, the second contact portion 300 and the driving portion 400 are arranged in the housing 100. There is a closed state and an open state between the first contact portion 200 and the second contact portion 300, and the driving portion 400 is used to drive the first contact portion 200 and the second contact portion 300 to switch from the closed state to the open state and from the open state to the closed state.

[0086] In one embodiment, if Figure 2 As shown, the housing 100 may include a first shell 110 and a second shell 120, which are connected together to form a hollow chamber for accommodating the first contact portion 200, the second contact portion 300 and the driving portion 400. The shape of the first shell 110 and the second shell 120 after being connected can have various embodiments. For example, in the embodiment of the present application, the shape of the first shell 110 and the second shell 120 after being connected is a hollow cuboid. Of course, in other embodiments, the shape of the first shell 110 and the second shell 120 after being connected can also be a hollow cylinder, or other suitable shapes.

[0087] As an example, the second housing 120 is in the shape of a rectangular parallelepiped with an opening, and the first contact portion 200, the second contact portion 300, and the driving portion 400 are installed in the second housing 120 through the opening of the second housing 120. The first housing 110 is in the shape of a plate, and the first housing 110 is buckled in the opening of the second housing 120 to form a hollow rectangular parallelepiped.

[0088] Of course, in other embodiments, the first shell 110 and the second shell 120 are both in the shape of a rectangular parallelepiped and have an opening on one surface. The opening of the first shell 110 is arranged opposite to the opening of the second shell 120, and the first shell 110 and the second shell 120 are snapped together to form a hollow chamber for accommodating the first contact part 200, the second contact part 300 and the driving part 400.

[0089] like Figure 3As shown, the driving part 400 includes a coil assembly 440, an armature assembly 420, a first driving member 410 and a second driving member 450. The coil assembly 440 is installed in the second housing 120, the armature assembly 420 is swingably arranged in the second housing 120 relative to the second housing 120, and the first driving member 410 and the second driving member 450 are both connected to the armature assembly 420. The coil assembly 440 is electromagnetically coupled with the armature assembly 420, and is configured to drive the armature assembly 420 to swing in response to an input signal, and then the armature assembly 420 drives the first driving member 410 and the second driving member 450 to move.

[0090] In one embodiment, a fixing member 130 is further disposed in the housing 100, and the fixing member 130 can be fixedly mounted on the second housing 120. The armature assembly 420 is connected to the fixing member 130 in a swingable manner.

[0091] The armature assembly 420 may include a swinging portion 420a and two oppositely disposed armature bodies 420b, wherein the swinging portion 420a is swingably connected to the fixing member 130, and the armature body 420b is connected to the swinging portion 420a. In one embodiment, the swinging portion 420a is made of plastic and is connected to the armature body 420b by integral injection molding.

[0092] like Figure 3 As shown, the first contact portion 200 includes a first movable spring piece 210, a first movable contact 220, a second stationary contact 250 and a first lead-out piece 260. The first movable contact 220 and the second stationary contact 250 are both disposed on the first movable spring piece 210 and are spaced apart along the length direction of the first movable spring piece 210. The first lead-out piece 260 is connected to the second stationary contact 250.

[0093] In one embodiment, the first movable contact 220 may be connected to the first movable reed piece 210 by riveting, and the second stationary contact 250 may connect the first movable reed piece 210 and the first lead-out piece 260 by riveting.

[0094] Of course, in other embodiments, the first movable contact 220 and the second stationary contact 250 may also be integrally formed on the first movable reed piece 210 .

[0095] The second contact portion 300 includes a second movable spring piece 310, a first stationary contact 320, a second movable contact 330, and a second lead-out piece 360. The first stationary contact 320 and the second movable contact 330 are both disposed on the second movable spring piece 310 and are spaced apart along the length direction of the second movable spring piece 310. The second lead-out piece 360 ​​is connected to the first stationary contact 320.

[0096] In one embodiment, the first stationary contact 320 may connect the second movable spring piece 310 and the second lead-out piece 360 ​​by riveting, and the second movable contact 330 may be connected to the second movable spring piece 310 by riveting.

[0097] Of course, in other embodiments, the first static contact 320 and the second movable contact 330 may also be integrally formed on the second movable reed 310 .

[0098] like Figure 3 As shown, the first movable reed 210 and the second movable reed 310 are arranged side by side along the thickness direction of the movable reed, and in the thickness direction of the movable reed, the position of the first movable contact 220 corresponds to the position of the first static contact 320, and the first movable contact 220 is used to contact or separate from the first static contact 320; the position of the second movable contact 330 corresponds to the position of the second static contact 250, and the second movable contact 330 is used to contact or separate from the second static contact 250.

[0099] The first driving member 410 is used to drive the first movable spring piece 210 to move so that the first movable contact 220 contacts or separates from the first static contact 320 ; the second driving member 450 is used to drive the second movable spring piece 310 to move so that the second movable contact 330 contacts or separates from the second static contact 250 .

[0100] When the first contact portion 200 and the second contact portion 300 are in a closed state, the first movable contact 220 contacts the first stationary contact 320, and the second movable contact 330 contacts the second stationary contact 250, so that the first movable spring piece 210 and the second movable spring piece 310 form a parallel circuit structure. When the first contact portion 200 and the second contact portion 300 are in an open state, the first movable contact 220 is separated from the first stationary contact 320, and the second movable contact 330 is separated from the second stationary contact 250.

[0101] The first moving contact 220 contacts the first stationary contact 320 to form an arc-proof end contact group, and the second moving contact 330 contacts the second stationary contact 250 to form a current-carrying end contact group. The arc-proof end contact group will generate an arc, while the current-carrying end contact group will not generate an arc.

[0102] The first lead-out tab 260 and the second lead-out tab 360 extend from the outer surface of the housing 100. The first lead-out tab 260 and the second lead-out tab 360 extend from the outer surface of the housing 100 and are respectively used to electrically connect to the positive and negative electrodes of the load.

[0103] Of course, the first contact part 200 and the second contact part 300 are not limited to adopting a parallel circuit structure when they are closed. For example, in another embodiment, the first contact part 200 includes a first movable spring piece 210 and a first movable contact 220, and the first movable contact 220 is arranged on the first movable spring piece 210. The second contact part 300 includes a second lead-out piece 360 ​​and a first static contact 320, and the first static contact 320 is arranged on the second lead-out piece 360. The driving part 400 has a first driving member 410, and the first driving member 410 is used to drive the first movable spring piece 210 to move, so that the first movable contact 220 contacts or separates with the first static contact 320.

[0104] like Figure 3 As shown, the driving part 400 also includes a push rod 430 , one end of which is connected to the second driving member 450 , and the other end of which is connected to the second movable spring 310 . The second driving member 450 drives the second movable spring 310 to move through the push rod 430 .

[0105] like Figures 4 to 7 As shown, the first contact portion 200 further includes a first force-bearing member 230 and a second force-bearing member 240, and the first force-bearing member 230 and the second force-bearing member 240 are both disposed on the first movable spring piece 210. The first driving member 410 is located on the side of the first movable spring piece 210 facing away from the first static contact 320, and is configured to push the first force-bearing member 230 to move so that the first movable contact 220 contacts the first static contact 320, and pull the second force-bearing member 240 to move so that the first movable contact 220 separates from the first static contact 320;

[0106] The stiffness of the first force-bearing member 230 is smaller than that of the second force-bearing member 240 , and when the first driving member 410 pushes the first force-bearing member 230 , the first force-bearing member 230 can be deformed to provide contact pressure to the first moving contact 220 and the first static contact 320 .

[0107] In the relay of the embodiment of the present application, the first driving member 410 is configured to drive the first movable reed 210 to move so that the first movable contact 220 contacts or separates from the first static contact 320. Since the first driving member 410 is located on the side of the first movable reed 210 facing away from the first static contact 320 and does not extend beyond the first movable reed 210 to the periphery of the first movable contact 220 and the first static contact 320, the arc generated between the first movable contact 220 and the first static contact 320 will not burn the first driving member 410, thereby ensuring the accuracy of the movement of the first driving member 410 and extending the service life of the relay.

[0108] In addition, the first driving member 410 pushes the first force-bearing member 230 to move so that the first moving contact 220 contacts the first static contact 320, and the first driving member 410 pulls the second force-bearing member 240 to move so that the first moving contact 220 is separated from the first static contact 320. That is to say, in the two processes of closing and opening the contact, the first driving member 410 acts on two different components respectively. Since the rigidity of the first force-bearing member 230 is less than the rigidity of the second force-bearing member 240, and the first force-bearing member 230 can be deformed to provide contact pressure to the first moving contact 220 and the first static contact 320, the effect of "flexible closing" is achieved when the contact is closed, and the effect of "rigid disconnection" is achieved when the contact is disconnected.

[0109] For "rigid disconnection", since the rigidity of the second force-bearing member 240 is relatively large, when the first driving member 410 pulls the second force-bearing member 240, the deformation is concentrated on the first moving spring piece 210, while the second force-bearing member 240 hardly deforms, thereby reducing the loss of the disconnecting force transmitted to the moving and static contacts, and shortening the force transmission time, which is conducive to timely disconnection, and avoiding the problem of ablation and adhesion between the first moving contact 220 and the first static contact 320 due to working heat.

[0110] For "flexible closure", the contact pressure after the first moving contact 220 contacts the first static contact 320 is proportional to the elastic force formed after the first force-bearing member 230 is deformed due to the push of the first driving member 410, that is, the greater the elastic force provided by the first force-bearing member 230 after deformation, the greater the contact pressure. Since the stiffness of the first force-bearing member 230 is less than that of the second force-bearing member 240, on the one hand, the first force-bearing member 230 is relatively soft and is not prone to fatigue after multiple deformations, thereby ensuring the consistency of the contact pressure; on the other hand, according to the formula F=kx (F is the elastic force provided by the first force-bearing member 230 after deformation, k is the elastic modulus of the first force-bearing member 230, and x is the deformation of the first force-bearing member 230), it can be seen that the magnitude of the elastic force of the first force-bearing member 230 is related to k and x. If k is designed to be smaller, the value of x will be larger under the premise of ensuring the same elastic force, that is, under the condition that the elastic force remains unchanged, the first force-bearing member 230 is allowed to produce a larger deformation, which significantly reduces the requirements for the movement stroke and dimensional accuracy of the first force-bearing member 230, which is beneficial to the parameter control of the relay product. In one embodiment, during the process of the first driving member 410 pulling the second force-bearing member 240, the second force-bearing member 240 does not deform.

[0111] Of course, in other embodiments, during the process in which the first driving member 410 pulls the second force-bearing member 240 , the second force-bearing member 240 may also generate a slight deformation.

[0112] In one embodiment, the second force bearing member 240 and the first movable spring piece 210 are separate structures. The rigidity of the second force bearing member 240 is greater than the rigidity of the first movable spring piece 210.

[0113] In the embodiment of the present application, since the second force-bearing member 240 and the first movable spring piece 210 are separate structures, and the rigidity of the second force-bearing member 240 is greater than that of the first movable spring piece 210, the second force-bearing member 240 can be made of a harder material, and the first movable spring piece 210 can be made of a more flexible material. In this way, when the contact is disconnected, the first movable spring piece 210 is kept flexible, and the second force-bearing member 240 is kept rigid.

[0114] like Figure 4 and Figure 7 As shown, the second force-bearing member 240 includes a connecting portion 241 and a force-bearing portion 242, and the connecting portion 241 is disposed on the side of the first movable spring piece 210 facing away from the first static contact 320, and is riveted to the first movable spring piece 210. In one embodiment, the first movable contact 220 is simultaneously riveted to the first movable spring piece 210 and the connecting portion 241 of the second force-bearing member 240. For example, the first movable spring piece 210 has a first through hole, and the connecting portion 241 has a second through hole, and the positions of the first through hole and the second through hole correspond, the first movable contact 220 is penetrated in the first through hole and the second through hole, and the first movable spring piece 210 and the connecting portion 241 are riveted.

[0115] The force-bearing portion 242 is connected to the connecting portion 241 and protrudes from a surface of the connecting portion 241 facing away from the first static contact 320 . The first driving member 410 is used to pull the force-bearing portion 242 to separate the first moving contact 220 from the first static contact 320 .

[0116] like Figure 7 As shown, the force-bearing portion 242 has a first section 2421 and two second sections 2422 , the two second sections 2422 are arranged at intervals along the width direction of the first movable spring piece 210 , and one end of the two second sections 2422 are connected to the connecting portion 241 , and the other ends are respectively connected to the two ends of the first section 2421 .

[0117] like Figure 6 As shown, the first driving member 410 has a first pulling portion 411 and a second pushing portion 414, and the second pushing portion 414 is connected to the first pulling portion 411. The first pulling portion 411 is located in a frame structure surrounded by the first section 2421 and the two second sections 2422, and is used to pull the first section 2421.

[0118] like Figure 7 As shown, the first section 2421 has a first convex arc surface 2421 a on one side facing the first pulling portion 411 , and the first convex arc surface 2421 a is used to contact with the first pulling portion 411 and form a line contact.

[0119] In the embodiment of the present application, the first section 2421 has a first convex arc surface 2421a. When the first pulling portion 411 pulls the first section 2421, the first pulling portion 411 contacts the first convex arc surface 2421a to form a line contact, thereby reducing the contact area between the first section 2421 and the first pulling portion 411, thereby avoiding wear and scraping caused by multiple contacts and frictions between the first section 2421 and the first pulling portion 411.

[0120] like Figure 4 and Figure 5 As shown, the first movable spring 210 includes a plurality of stacked leaf springs 211, and the leaf spring 211 farthest from the first static contact 320 among the plurality of leaf springs 211 is defined as the first leaf spring 211a; the first leaf spring 211a has a central portion 2111 and an annular segment 2112 at a position corresponding to the first static contact 320, the annular segment 2112 surrounds a portion of the outer circumference of the central portion 2111, and a gap 2113 is formed between the annular segment 2112 and the central portion 2111. Along the extending direction of the gap 2113, the annular segment 2112 is bent in a direction away from the first static contact 320 to form a first force-bearing member 230, and the first force-bearing member 230 surrounds a portion of the outer circumference of the second force-bearing member 240. The first movable contact 220 is riveted to the remaining leaf springs, the central portion 2111 of the first leaf spring 211a, and the connecting portion 241 of the second force-bearing member 240.

[0121] Along the length direction of the first movable spring 210 , a position of the annular segment 2112 corresponding to the second force-bearing member 240 has a compressed area 2112 a , and the second pushing portion 414 of the first driving member 410 is used to push the compressed area 2112 a .

[0122] The number of leaf springs 211 included in the first movable spring leaf 210 may be two, three, four or other numbers, which is not particularly limited in the present application.

[0123] Of course, the first movable spring piece 210 may also be composed of a single leaf spring component instead of a plurality of leaf springs 211. One end of the first movable spring piece 210 in the longitudinal direction is bent to form a first force bearing member 230.

[0124] like Figure 6 As shown, the first driving member 410 and the second driving member 450 are both integrally formed with the armature assembly 420. For example, the first driving member 410 and the second driving member 450 are both integrally formed with the swinging portion 420a of the armature assembly 420.

[0125] In one embodiment, the first driving member 410 and the second driving member 450 are made of plastic and connected to the armature assembly 420 by integral injection molding.

[0126] Compared with the prior art in which the push rod 430 and the armature assembly 420 are separate structures and the push rod 430 and the armature assembly 420 are designed to be transmission-connected, the first drive member 410 and the armature assembly 420 of the embodiment of the present application are integrated structures. First, the number of parts of the drive part 400 is reduced and the mold cost is reduced; second, the assembly process of the push rod 430 and the armature assembly 420 is reduced and the assembly difficulty is reduced; third, the transmission error caused by factors such as dimensional tolerance, deformation, and assembly accuracy of the push rod 430 is reduced; fourth, the contact rebound and spring impact caused by the inertia of the push rod 430 are avoided; fifth, the integrated structure design of the first drive member 410 and the armature assembly 420 makes the structure of the drive part 400 more compact and reduces the internal volume occupied by the shell 100.

[0127] Please return to Figure 3 The relay further includes a permanent magnet 500 disposed around the first moving contact 220 and the first stationary contact 320 to extinguish an arc generated between the first moving contact 220 and the first stationary contact 320 .

[0128] In the embodiment of the present application, since the first driving member 410 is located on the side of the first moving spring piece 210 facing away from the first static contact 320, and is not around the first moving contact 220 and the first static contact 320, the position of the permanent magnet 500 can be closer to the first moving contact 220 and the first static contact 320, thereby increasing the magnetic field strength at the center of the contact and improving the arc extinguishing effect.

[0129] As described above, when the first contact portion 200 and the second contact portion 300 are in a closed state, the first movable spring piece 210 and the second movable spring piece 310 form a parallel circuit structure, and the direction of the current passing through the first movable spring piece 210 is the same as the direction of the current passing through the second movable spring piece 310, so the first movable spring piece 210 and the second movable spring piece 310 attract each other. When a large current flows, a large suction force can be generated between the first movable spring piece 210 and the second movable spring piece 310, thereby causing the first movable spring piece 210 and the second movable spring piece 310 to switch from the original parallel setting to bending and deforming in a direction close to each other.

[0130] Taking the first movable spring piece 210 as an example, when the first movable spring piece 210 is bent and deformed to a large extent, the middle portion of the first movable spring piece 210 will be tilted upward, and the end of the first movable spring piece 210 provided with the first movable contact 220 will tilt downward. In the related art, since the end of the first movable spring piece 210 is driven by the push rod 430 to realize the contact closing or opening, when the end of the first movable spring piece 210 tilts downward, the first movable spring piece 210 will press against the push rod 430, thereby affecting the holding force of the armature assembly 420.

[0131] In one embodiment of the present application, the first driving member 410 has a pushing portion for pushing the first force-bearing member 230, and there is no overlapping part in the orthographic projections of the pushing portion and the first movable spring piece 210 on a target plane. In this way, when the end of the first movable spring piece 210 provided with the first movable contact 220 is tilted downward, the first movable spring piece 210 will not interfere with the pushing portion, and then the first movable spring piece 210 will not press against the pushing portion, thereby ensuring the holding force provided by the armature assembly 420.

[0132] In the embodiment of the present application, the pushing portion is the second pushing portion 414 .

[0133] In one embodiment, all the first movable spring pieces 210 are located on the side of the pushing portion facing the second static contact 250 , and when the ends of the first movable spring pieces 210 are tilted downward, they will not abut against the pushing portion.

[0134] In another embodiment, an opening may be provided at a position corresponding to the first movable spring piece 210 and the pushing portion. When the end of the first movable spring piece 210 is tilted downward, the pushing portion can extend into the opening of the first movable spring piece 210 without abutting against the first movable spring piece 210. This can also prevent the first movable spring piece 210 from abutting against the pushing portion.

[0135] In addition, it should be emphasized that since the first driving member 410 is located on the side of the first movable spring piece 210 facing away from the first static contact 320, there is no need to worry about the problem that the arc generated between the dynamic and static contacts will burn the first driving member 410, and then in the length direction of the first movable spring piece 210, the pushing portion of the first driving member 410 can be arranged at a position closer to the first movable contact 220, so that when the end of the first movable spring piece 210 is tilted, the tilt component of the position corresponding to the pushing portion of the first movable spring piece 210 is smaller. Therefore, even if the end of the first movable spring piece 210 exceeds the pushing portion, the first movable spring piece 210 is not easy to contact the pushing portion, avoiding the problem of the first movable spring piece 210 abutting against the pushing portion and affecting the holding force.

[0136] like Figures 8 to 12 As shown, the similarities between the relay of the second embodiment of the present application and the relay of the first embodiment are not repeated here, and the difference lies in that:

[0137] The second force-bearing member 240 includes a connecting portion 241 and a force-bearing portion 242 . The connecting portion 241 is connected to the first movable spring piece 210 , for example, by riveting, and the force-bearing portion 242 is connected to the connecting portion 241 .

[0138] like Fig.11 As shown, the force-bearing portion 242 includes two tension-bearing portions 2423 spaced apart from each other along the width direction of the first movable spring piece 210 , and the tension-bearing portions 2423 are connected to the connecting portion 241 .

[0139] like Fig. 9 and Fig.10 As shown, the first driving member 410 has two second pulling portions 412 spaced apart along the width direction of the first movable spring piece 210 , and the two second pulling portions 412 are respectively located on one side of the two tensioned portions 2423 facing the first movable spring piece 210 , and are used to pull the two tensioned portions 2423 respectively.

[0140] like Fig. 9 , Fig.11 and Fig.12 As shown, the tension portion 2423 has a third section 2423a and a fourth section 2423b, one end of the third section 2423a is connected to the connecting portion 241, one end of the fourth section 2423b is connected to the other end of the third section 2423a, and the third section 2423a is perpendicular to the fourth section 2423b; the second pulling portion 412 is located in the area enclosed by the third section 2423a and the fourth section 2423b, the second pulling portion 412 is used to pull the fourth section 2423b, and a protrusion 4121 is provided on the surface of the second pulling portion 412 facing the third section 2423a.

[0141] In the embodiment of the present application, a protrusion 4121 is provided on the side surface of the second pulling portion 412 facing the third section 2423a, and the protrusion 4121 can contact the third section 2423a to prevent a large contact area from being formed between the second pulling portion 412 of the first driving member 410 and the third section 2423a during movement, thereby avoiding friction scraps.

[0142] In one embodiment, the raised portion 4121 may be a long strip of convex ribs, a hemispherical convex hull, or the like.

[0143] like Fig.12 As shown, the second pulling portion 412 has a second convex arc surface 4122 on the side facing the fourth segment 2423b, and the second convex arc surface 4122 is used to contact with the fourth segment 2423b and form a line contact.

[0144] In the embodiment of the present application, the second pulling portion 412 has a second convex arc surface 4122. When the second pulling portion 412 pulls the fourth section 2423b, the fourth section 2423b contacts the second convex arc surface 4122 to form a line contact, thereby reducing the contact area between the fourth section 2423b and the second pulling portion 412, thereby avoiding wear and scraping caused by multiple contacts and frictions between the fourth section 2423b and the second pulling portion 412.

[0145] like Fig. 9 and Fig.11As shown, in one embodiment, the first force-bearing member 230 may be a compression spring, but is not limited thereto. The first force-bearing member 230 is connected to the connecting portion 241 or the first movable spring sheet 210, and has a pushed portion 231 located between the two tensioned portions 2423; the first driving member 410 also has a first pushing portion 413 located between the two second pulling portions 412, for pushing the pushed portion 231. In the embodiment of the present application, the pushing portion of the first driving member 410 is the first pushing portion 413.

[0146] like Fig.10 As shown, the first pushing portion 413 has a third convex arc surface 4131 on one side facing the pushed portion 231 , and the third convex arc surface 4131 is used to contact with the pushed portion 231 and form a line contact.

[0147] In the embodiment of the present application, the first pushing portion 413 has a third convex arc surface 4131. When the first pushing portion 413 pushes the pushed portion 231, the pushed portion 231 contacts the third convex arc surface 4131 to form a line contact, thereby reducing the contact area between the first pushing portion 413 and the pushed portion 231, thereby avoiding wear and scraping caused by multiple contacts and frictions between the first pushing portion 413 and the pushed portion 231.

[0148] like Figures 13 to 16 As shown, the similarities between the relay of the third embodiment of the present application and the relay of the second embodiment are not repeated here, and the difference lies in that:

[0149] The second force-bearing member 240 is an integral structure with the first movable spring piece 210. Further, the second force-bearing member 240 is formed by bending the end of the first movable spring piece 210 in a direction away from the first static contact 320.

[0150] For example, the first movable spring leaf 210 includes a plurality of stacked leaf springs 211 , wherein one end of one leaf spring 211 in the length direction is bent in a direction away from the first static contact 320 to form the second force bearing member 240 .

[0151] For example, in one embodiment, the first movable spring 210 includes three leaf springs 211 , and the three leaf springs 211 are stacked. The second force-bearing member 240 can be formed on any one of the leaf springs 211 .

[0152] In one embodiment, the shape and structure of the second force-bearing member 240 can refer to the second force-bearing member 240 of the relay of the second embodiment. For example, the second force-bearing member 240 includes two tensioning portions 2423 spaced apart along the width direction of the first movable spring piece 210, which will not be described in detail here.

[0153] Similarly, the first driving member 410 may include two second pulling portions 412 spaced apart along the width direction of the first movable spring piece 210. The two second pulling portions 412 are respectively located on one side of the two tensioned portions 2423 facing the first movable spring piece 210, and are used to pull the two tensioned portions 2423 respectively, which will not be described in detail here.

[0154] like Fig.15 and Fig.16 As shown, the first force-bearing member 230 is connected to the first movable spring piece 210 , and is a separate structure from the first movable spring piece 210 .

[0155] Among them, the shape and structure of the first force-bearing member 230 of the embodiment of the present application can refer to the first force-bearing member 230 of the relay of the second embodiment, and will not be repeated here.

[0156] like Figures 17 to 19 As shown, the similarities between the relay of the fourth embodiment of the present application and the relay of the first embodiment are not repeated here, and the difference lies in that:

[0157] The second force-bearing member 240 is an integral structure with the first movable spring piece 210. Further, the second force-bearing member 240 is formed by bending the end of the first movable spring piece 210 in a direction away from the first static contact 320.

[0158] For example, the first movable spring 210 includes a plurality of stacked leaf springs 211 , wherein the leaf spring 211 farthest from the first static contact 320 is defined as a first leaf spring 211 a , and the leaf spring 211 adjacent to the first leaf spring 211 a is defined as a second leaf spring 211 b .

[0159] One end of the first leaf spring 211 a in the length direction is bent in the direction away from the first static contact 320 to form a first force bearing member 230 , and one end of the second leaf spring 211 b in the length direction is bent in the direction away from the first static contact 320 to form a second force bearing member 240 .

[0160] Among them, the shapes and structures of the first force-bearing member 230 and the second force-bearing member 240 in the embodiment of the present application can refer to the shapes and structures of the first force-bearing member 230 and the second force-bearing member 240 in the first embodiment, and will not be repeated here.

[0161] Of course, in other embodiments, the second force-bearing member 240 may also be formed by bending the first leaf spring 211 a , and the first force-bearing member 230 may also be formed by bending the second leaf spring 211 b .

[0162] Alternatively, when the number of the leaf springs 211 included in the first movable spring piece 210 is greater than or equal to three, the first force-bearing member 230 and the second force-bearing member 240 may be formed by bending any two leaf springs 211 among the plurality of leaf springs 211 .

[0163] In one embodiment, the stiffness of the second leaf spring 211 b is greater than the stiffness of the first leaf spring 211 a .

[0164] In order to achieve the effect that the stiffness of the second leaf spring 211 b is greater than the stiffness of the first leaf spring 211 a , the thickness of the second leaf spring 211 b may be designed to be greater than the thickness of the first leaf spring 211 a .

[0165] Of course, in other embodiments, when the thickness of the first leaf spring 211 a is equal to the thickness of the second leaf spring 211 b , the first leaf spring 211 a may be made of a material with a smaller rigidity, while the second leaf spring 211 b may be made of a material with a larger rigidity.

[0166] In summary, the relay of the embodiment of the present application has at least the following advantages and beneficial effects:

[0167] In the relay of the embodiment of the present application, the first driving member 410 is configured to drive the first movable reed 210 to move so that the first movable contact 220 contacts or separates from the first static contact 320. Since the first driving member 410 is located on the side of the first movable reed 210 facing away from the first static contact 320 and does not extend beyond the first movable reed 210 to the periphery of the first movable contact 220 and the first static contact 320, the arc generated between the first movable contact 220 and the first static contact 320 will not burn the first driving member 410, thereby ensuring the accuracy of the movement of the first driving member 410 and extending the service life of the relay.

[0168] In addition, the first driving member 410 pushes the first force-bearing member 230 to move so that the first moving contact 220 contacts the first static contact 320, and the first driving member 410 pulls the second force-bearing member 240 to move so that the first moving contact 220 is separated from the first static contact 320. That is to say, in the two processes of closing and opening the contact, the first driving member 410 acts on two different components respectively. Since the rigidity of the first force-bearing member 230 is less than the rigidity of the second force-bearing member 240, and the first force-bearing member 230 can be deformed to provide contact pressure to the first moving contact 220 and the first static contact 320, the effect of "flexible closing" is achieved when the contact is closed, and the effect of "rigid disconnection" is achieved when the contact is disconnected.

[0169] Furthermore, since the second force-bearing member 240 and the first movable spring piece 210 are separate structures, and the rigidity of the second force-bearing member 240 is greater than that of the first movable spring piece 210, the second force-bearing member 240 can be made of a harder material, while the first movable spring piece 210 can be made of a more flexible material. In this way, when the contact is disconnected, the first movable spring piece 210 can be kept flexible, and the second force-bearing member 240 can be kept rigid.

[0170] Furthermore, the first section 2421 has a first convex arc surface 2421a. When the first pulling portion 411 pulls the first section 2421, the first pulling portion 411 contacts the first convex arc surface 2421a to form a line contact, thereby reducing the contact area between the first section 2421 and the first pulling portion 411, thereby avoiding wear and scraping caused by multiple contacts and frictions between the first section 2421 and the first pulling portion 411.

[0171] Furthermore, since the first driving member 410 is located on the side of the first moving spring piece 210 facing away from the first static contact 320, and is not around the first moving contact 220 and the first static contact 320, the position of the permanent magnet 500 can be closer to the first moving contact 220 and the first static contact 320, thereby increasing the magnetic field strength at the contact center and improving the arc extinguishing effect.

[0172] It is understandable that the various embodiments / implementations provided in the present application can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0173] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0174] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0175] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0176] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A relay, characterized in that: include: The first contact portion includes a first movable spring piece and a first movable contact point, a first force-bearing member and a second force-bearing member arranged on the first movable spring piece; a second contact portion including a first stationary contact; as well as a driving part, comprising a first driving member, the first driving member being located on a side of the first moving spring sheet facing away from the first static contact, and being configured to push the first force-bearing member to move so that the first moving contact contacts the first static contact, and to pull the second force-bearing member to move so that the first moving contact separates from the first static contact; The stiffness of the first force-bearing member is smaller than that of the second force-bearing member, and in the process that the first driving member pushes the first force-bearing member, the first force-bearing member can be deformed to provide contact pressure to the first moving contact and the first static contact.

2. The relay according to claim 1, characterized in that: During the process in which the first driving member pulls the second force-bearing member, the second force-bearing member does not deform.

3. The relay according to claim 1, characterized in that: The second force-bearing member and the first movable spring piece are separate structures.

4. The relay according to claim 3, characterized in that: The rigidity of the second force-bearing member is greater than the rigidity of the first movable spring.

5. The relay according to claim 3, characterized in that: The second force-bearing member is riveted to the first movable spring.

6. The relay according to claim 5, characterized in that: The first moving contact is riveted to the first moving spring piece and the second force-bearing member at the same time.

7. The relay according to claim 5, characterized in that: The second force-bearing member includes a connecting portion and a force-bearing portion, the connecting portion is arranged on a side of the first movable spring piece facing away from the first static contact and is riveted to the first movable spring piece, the force-bearing portion is connected to the connecting portion and protrudes from a surface of the connecting portion on a side facing away from the first static contact, and the first driving member is used to pull the force-bearing portion to separate the first movable contact from the first static contact.

8. The relay according to claim 7, characterized in that: The force-bearing portion comprises a first section and two second sections, the two second sections are arranged at intervals, one end of the two second sections are connected to the connecting portion, and the other ends are respectively connected to two ends of the first section; The first driving member has a first pulling portion, which is located in a frame structure surrounded by the first section and two of the second sections and is used for pulling the first section.

9. The relay according to claim 8, characterized in that: The first section has a first convex arc surface on one side facing the first pulling portion, and the first convex arc surface is used to contact with the first pulling portion and form a line contact.

10. The relay according to claim 7, characterized in that: The force-bearing part includes two tension-bearing parts arranged at intervals, and the tension-bearing parts are connected to the connecting part; The first driving member has two second pulling parts, and the two second pulling parts are respectively located on one side of the two tensioned parts facing the first movable spring leaf, and are used to pull the two tensioned parts respectively.

11. The relay according to claim 10, characterized in that: The tension part has a third section and a fourth section, one end of the third section is connected to the connecting part, one end of the fourth section is connected to the other end of the third section, and the third section is perpendicular to the fourth section; The second pulling portion is located in the area surrounded by the third section and the fourth section. The second pulling portion is used to pull the fourth section. A protrusion is provided on a surface of the second pulling portion facing the third section.

12. The relay according to claim 11, characterized in that: The second pulling portion has a second outwardly convex arc surface on a side facing the fourth segment, and the second outwardly convex arc surface is used to contact with the fourth segment and form a line contact.

13. The relay according to claim 10, characterized in that: The first force-bearing member is connected to the connecting portion or the first movable spring, and has a pushing portion located between the two tension-bearing portions; The first driving member further has a first pushing portion located between the two second pulling portions and used for pushing the pushed portion.

14. The relay according to claim 13, characterized in that: The first pushing portion has a third outwardly convex arc surface on one side facing the pushed portion, and the third outwardly convex arc surface is used to contact with the pushed portion and form a line contact.

15. The relay according to claim 1, characterized in that The first movable spring comprises a plurality of stacked leaf springs, and the leaf spring farthest from the first static contact point among the plurality of leaf springs is defined as a first leaf spring; The first leaf spring has a central portion and an annular segment at a position corresponding to the first static contact, the annular segment surrounds a portion of the outer circumference of the central portion, and a gap is formed between the annular segment and the central portion; Along the extending direction of the slit, the annular segment is bent in a direction away from the first static contact to form the first force-bearing member, and the first force-bearing member surrounds a portion of the outer circumference of the second force-bearing member; The first moving contact is simultaneously riveted to the remaining leaf springs, the central portion of the first leaf spring, and the second force-bearing member.

16. The relay according to claim 15, characterized in that Along the length direction of the first movable spring piece, a position of the annular segment corresponding to the second force-bearing member has a compression zone, and the first driving member is used to push the compression zone.

17. The relay according to claim 1, characterized in that: The second force-bearing member and the first movable spring piece are an integral structure.

18. The relay according to claim 17, characterized in that: The second force-bearing member is formed by bending the end of the first movable spring piece toward a direction away from the first static contact point.

19. The relay according to claim 18, characterized in that The first movable spring sheet includes a plurality of stacked leaf springs, wherein one end of one of the leaf springs in the length direction is bent in a direction away from the first static contact to form the second force bearing member.

20. The relay according to claim 19, characterized in that The first force-bearing member is connected to the first movable spring piece and is a separate structure from the first movable spring piece.

21. The relay according to claim 19, characterized in that The leaf spring farthest from the first static contact point among the plurality of leaf springs is defined as a first leaf spring, and the leaf spring adjacent to the first leaf spring is defined as a second leaf spring; One end of the first leaf spring in the length direction is bent in a direction away from the first static contact to form the first force-bearing member, and one end of the second leaf spring in the length direction is bent in a direction away from the first static contact to form the second force-bearing member.

22. The relay according to claim 21, characterized in that The stiffness of the second leaf spring is greater than the stiffness of the first leaf spring.

23. The relay according to claim 22, characterized in that The second leaf spring has a thickness greater than a thickness of the first leaf spring.

24. The relay according to any one of claims 1 to 23, characterized in that: The driving part further comprises an armature assembly, and the armature assembly and the first driving member are an integral structure.

25. The relay according to claim 24, characterized in that The relay also includes a housing, and the armature assembly includes a swinging part and an armature body. The swinging part is swingable relative to the housing and is connected to the armature body by integral injection molding. The first driving member is integrally connected to the swinging part and is used to push the first force-bearing member or pull the second force-bearing member.

26. The relay according to any one of claims 1 to 23, characterized in that: The first contact portion further includes a second static contact, and the first movable contact and the second static contact are respectively arranged at two ends of the length direction of the first movable spring piece; The second contact portion further comprises a second movable spring piece and a second movable contact point, and the first static contact point and the second movable contact point are respectively arranged at two ends of the length direction of the second movable spring piece; The first moving reed and the second moving reed are arranged side by side, and the first moving contact corresponds to the first static contact, and the second moving contact corresponds to the second static contact; The driving part further comprises a pushing rod and a second driving member, wherein the second driving member drives the second movable reed to move through the pushing rod, so that the second movable contact is in contact with or separated from the second stationary contact.

27. The relay according to any one of claims 1 to 23, characterized in that: The relay further includes a permanent magnet disposed around the first moving contact and the first stationary contact, and used for extinguishing an arc generated between the first moving contact and the first stationary contact.

28. The relay according to claim 1, characterized in that The first driving member has a pushing portion for pushing the first force-bearing member, and the orthographic projections of the pushing portion and the first movable spring piece on a target plane do not have overlapping parts; Wherein, the target plane is perpendicular to the thickness direction of the first movable spring piece.

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